JP7251504B2 - rotary actuator - Google Patents

rotary actuator Download PDF

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Publication number
JP7251504B2
JP7251504B2 JP2020049085A JP2020049085A JP7251504B2 JP 7251504 B2 JP7251504 B2 JP 7251504B2 JP 2020049085 A JP2020049085 A JP 2020049085A JP 2020049085 A JP2020049085 A JP 2020049085A JP 7251504 B2 JP7251504 B2 JP 7251504B2
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Prior art keywords
insertion hole
jig insertion
housing
inner ring
rotating shaft
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JP2021151095A5 (en
JP2021151095A (en
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亮 田淵
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Denso Corp
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Denso Corp
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Priority to JP2020049085A priority Critical patent/JP7251504B2/en
Priority to DE112021001754.3T priority patent/DE112021001754T5/en
Priority to CN202180016007.0A priority patent/CN115152131A/en
Priority to PCT/JP2021/010361 priority patent/WO2021187414A1/en
Publication of JP2021151095A publication Critical patent/JP2021151095A/en
Publication of JP2021151095A5 publication Critical patent/JP2021151095A5/ja
Priority to US17/944,532 priority patent/US20230015043A1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Retarders (AREA)
  • General Details Of Gearings (AREA)

Description

本発明は、回転式アクチュエータに関する。 The present invention relates to rotary actuators.

従来、モータとモータ回転を減速する減速機とを備える回転式アクチュエータが知られている。特許文献１に開示された回転式アクチュエータでは、樹脂製のハウジングに金属プレートをインサート成形し、その金属プレートに軸受の外輪を圧入して固定しつつ、モータの回転軸を軸受の内輪に圧入して固定している。これによりロータの位置検出用のセンサと磁石との隙間のばらつき量を小さくし、センサに作用する磁力の増大および安定化を図っている。 Conventionally, a rotary actuator is known that includes a motor and a speed reducer that reduces the rotation of the motor. In the rotary actuator disclosed in Patent Document 1, a metal plate is insert-molded into a resin housing, and the outer ring of the bearing is press-fitted into the metal plate and fixed, while the rotating shaft of the motor is press-fitted into the inner ring of the bearing. fixed. This reduces the amount of variation in the gap between the sensor for detecting the position of the rotor and the magnet, thereby increasing and stabilizing the magnetic force acting on the sensor.

特許第５４８３２１７号公報Japanese Patent No. 5483217

特許文献１のように軸受の外輪および内輪を両方とも固定する形態においては、外輪を圧入固定した後、内輪に回転軸を圧入するときに内輪を受ける必要がある。特許文献１の第１形態では、金属プレートの平らなベース部分のうち周方向の複数箇所を曲げ起こして外輪固定部を形成し、ベース部分の残りで内輪受け部を形成している。また、特許文献１の第２形態では、ベース部分を全体的に軸方向に突出させた後、その突出部の内側を反対方向に凹ませ、その凹所の側面で外輪固定部を形成し、凹所の底面で内輪受け部を形成している。 In a form in which both the outer ring and the inner ring of the bearing are fixed as in Patent Document 1, it is necessary to receive the inner ring when the rotating shaft is press-fitted into the inner ring after the outer ring is press-fitted and fixed. In the first form of Patent Document 1, a flat base portion of a metal plate is bent up at a plurality of locations in the circumferential direction to form an outer ring fixing portion, and the remainder of the base portion forms an inner ring receiving portion. In addition, in the second form of Patent Document 1, after the base portion is entirely protruded in the axial direction, the inner side of the protruding portion is recessed in the opposite direction, and the side surface of the recess forms the outer ring fixing portion, The bottom surface of the recess forms an inner ring receiving portion.

しかし、引用文献１の両形態とも製造が困難である。第１形態では外輪の保持力が低く、また、第２形態では製造時の割れが懸念される。 However, both forms of D1 are difficult to manufacture. In the first form, the holding force of the outer ring is low, and in the second form, there is concern about cracking during manufacturing.

本発明は、上述の点に鑑みてなされたものであり、その目的は、位置検出部の磁力を増大および安定化させつつ製造し易い回転式アクチュエータを提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary actuator that is easy to manufacture while increasing and stabilizing the magnetic force of the position detecting portion.

本発明の回転式アクチュエータは、ステータコア（３２）、ステータコアに設けられたコイル（３３）、回転軸（３７）、および、回転軸と一体のロータコア（３８）を有するモータ（３０）と、回転軸（３７）の回転を減速して出力する減速機（４０）と、モータおよび減速機を収容している樹脂製のハウジング（２０）と、外輪（７１）および回転軸に圧入固定された内輪（７２）を有し、回転軸を回転可能に支持している軸受（３５）と、金属プレート（２４）と、ロータコアに設けられた磁石（５７）と、回転軸の回転軸心（ＡＸ１）に平行な軸方向において磁石との間に隙間を空けて配置されるようにハウジングに設けられ、磁石の磁気により回転軸の回転位置を検出する磁気センサ（５６）と、を備える。金属プレートは、金属製であって、ステータコアが圧入された筒部（６１）、筒部の一端に設けられた底部（６２）、筒部の中央において軸方向に突出するように形成され外輪を圧入固定している軸方向の両端が開放された筒状の外輪固定部（６３）を有し、筒部および底部がハウジングにインサート成形により一体的に設けられている。 The rotary actuator of the present invention comprises a motor (30) having a stator core (32), a coil (33) provided on the stator core, a rotating shaft (37), and a rotor core (38) integral with the rotating shaft ; A reducer (40) that reduces the rotation of the shaft (37) and outputs it, a resin housing (20) that houses the motor and the reducer , an outer ring (71), and an inner ring that is press-fitted and fixed to the rotating shaft. bearing (72) for rotatably supporting the rotating shaft; a metal plate (24) ; a magnet (57) provided on the rotor core; A magnetic sensor (56) is provided in the housing so as to be spaced apart from the magnet in the axial direction parallel to AX1), and detects the rotational position of the rotating shaft by the magnetism of the magnet. The metal plate is made of metal and includes a cylindrical portion (61) into which the stator core is press-fitted, a bottom portion (62) provided at one end of the cylindrical portion, and an outer ring formed so as to protrude in the axial direction at the center of the cylindrical portion. It has a cylindrical outer ring fixing portion (63) which is press-fitted and fixed at both ends in the axial direction and is open, and the cylindrical portion and the bottom portion are integrally provided in the housing by insert molding.

ハウジングは、回転軸の回転軸心（ＡＸ１）に平行な軸方向視において内輪の一端面（７３）の少なくとも一部と重なる開口をもち、内輪受け治具（９１，９１２，９１３）を挿入可能な治具挿入孔（７４，７４２，７４３，７４４，７４５，７４６）を有する。治具挿入孔は、金属プレートの底部を保持しているハウジングの底部保持部の径方向内側に形成されている。
The housing has an opening that overlaps at least a part of one end surface (73) of the inner ring when viewed in an axial direction parallel to the rotation axis (AX1) of the rotating shaft, and can insert an inner ring receiving jig (91, 912, 913). jig insertion holes (74, 742, 743, 744, 745, 746). The jig insertion hole is formed radially inside the bottom holding portion of the housing that holds the bottom of the metal plate.

このような治具挿入孔を設けることで、組付け時に治具挿入孔に挿入した内輪受け治具で内輪を受けることが可能となり、外輪固定部と一体に内輪受け部を設ける必要がなくなる。そのため、軸受の外輪および内輪を両方とも固定することで位置検出部の磁力を増大および安定化させつつ、外輪固定部を単純な筒状にすることで製造し易くなっている。 By providing such a jig insertion hole, the inner ring can be received by an inner ring receiving jig inserted into the jig insertion hole during assembly, eliminating the need to provide an inner ring receiving portion integrally with the outer ring fixing portion. Therefore, by fixing both the outer ring and the inner ring of the bearing, the magnetic force of the position detecting portion is increased and stabilized, and the outer ring fixing portion is formed in a simple cylindrical shape, thereby facilitating manufacturing.

第１実施形態の回転式アクチュエータが適用されたシフトバイワイヤシステムを説明する模式図。1 is a schematic diagram for explaining a shift-by-wire system to which the rotary actuator of the first embodiment is applied; FIG. 第１実施形態の回転式アクチュエータの断面図。Sectional drawing of the rotary actuator of 1st Embodiment. 図２のＩＩＩ部拡大図。The III section enlarged view of FIG. 図３のフロントハウジングおよびモータ側軸受をＩＶ－ＩＶ線から見た図。FIG. 4 is a view of the front housing and the motor-side bearing of FIG. 3 viewed from line IV-IV; 図３のモータ側軸受の組付け手順を説明する図。4A and 4B are diagrams for explaining a procedure for assembling the motor-side bearing of FIG. 3; FIG. 図３の回転軸の組付け手順を説明する図。4A and 4B are diagrams for explaining a procedure for assembling the rotating shaft of FIG. 3; FIG. 図３のモータ側軸受の他の組付け手順を説明する図。FIG. 4 is a diagram for explaining another assembly procedure for the motor-side bearing of FIG. 3; 第２実施形態の回転式アクチュエータの治具挿入孔を説明する図であって、第１実施形態における図３に対応する図。FIG. 4 is a diagram for explaining a jig insertion hole of the rotary actuator of the second embodiment, and is a diagram corresponding to FIG. 3 in the first embodiment; 図８のフロントハウジングおよびモータ側軸受をＩＸ－ＩＸ線から見た図。FIG. 9 is a view of the front housing and the motor-side bearing of FIG. 8 viewed from line IX-IX; 図８の回転軸の組付け手順を説明する図。FIG. 9 is a view for explaining the assembly procedure of the rotary shaft in FIG. 8; 第３実施形態の回転式アクチュエータの治具挿入孔を説明する図であって、第１実施形態における図３に対応する図。FIG. 10 is a view for explaining a jig insertion hole of a rotary actuator of a third embodiment, and is a view corresponding to FIG. 3 in the first embodiment; 図１１のフロントハウジングおよびモータ側軸受をＸＩＩ－ＸＩＩ線から見た図。The figure which looked at the front housing and motor side bearing of FIG. 11 from the XII-XII line. 図１２の回転軸の組付け手順を説明する図。FIG. 13 is a view for explaining the assembly procedure of the rotary shaft in FIG. 12; 第４実施形態の回転式アクチュエータの治具挿入孔およびシール部材を説明する図であって、第１実施形態における図３に対応する図。FIG. 10 is a diagram for explaining a jig insertion hole and a sealing member of a rotary actuator according to a fourth embodiment, corresponding to FIG. 3 in the first embodiment; 第５実施形態の回転式アクチュエータの治具挿入孔およびシール部材を説明する図であって、第１実施形態における図３に対応する図。FIG. 10 is a view for explaining a jig insertion hole and a sealing member of a rotary actuator of a fifth embodiment, and is a view corresponding to FIG. 3 in the first embodiment; 第６実施形態の回転式アクチュエータの治具挿入孔およびシール部材を説明する図であって、第１実施形態における図３に対応する図。FIG. 12 is a diagram for explaining a jig insertion hole and a seal member of a rotary actuator according to a sixth embodiment, corresponding to FIG. 3 in the first embodiment;

以下、回転式アクチュエータ（以下、アクチュエータ）の複数の実施形態を図面に基づき説明する。実施形態同士で実質的に同一の構成には同一の符号を付して説明を省略する。 A plurality of embodiments of rotary actuators (hereinafter referred to as actuators) will be described below with reference to the drawings. The same reference numerals are assigned to substantially the same configurations between the embodiments, and the description thereof is omitted.

［第１実施形態］
図１に示すように、第１実施形態のアクチュエータ１０は、車両用変速機１１のケース１２の外壁に固定され、シフトバイワイヤシステム１３の動力源として用いられる。アクチュエータ１０は、シフト操作装置１４からの指令信号に応じて制御装置１５により駆動制御されることで、変速機１１のシフトレンジ切替機構１６を作動させてシフトレンジを切り替える。 [First embodiment]
As shown in FIG. 1 , an actuator 10 of the first embodiment is fixed to the outer wall of a case 12 of a vehicle transmission 11 and used as a power source for a shift-by-wire system 13 . Actuator 10 is driven and controlled by control device 15 in response to a command signal from shift operation device 14 to operate shift range switching mechanism 16 of transmission 11 to switch the shift range.

（アクチュエータ）
先ず、アクチュエータ１０の全体構成について図２を参照して説明する。アクチュエータ１０は、ハウジング２０、モータ３０および減速機４０を備える。 (actuator)
First, the overall configuration of the actuator 10 will be described with reference to FIG. Actuator 10 includes housing 20 , motor 30 and speed reducer 40 .

ハウジング２０は、カップ状のフロントハウジング２１およびリアハウジング２２を有する。フロントハウジング２１およびリアハウジング２２は、開口部同士が組み合わされてボルト２３により互いに締結されている。フロントハウジング２１には、有底筒状の金属プレート２４が埋め込まれている。リアハウジング２２は、フロントハウジング２１とは反対側に突き出す筒状突出部２８を有する。リアハウジング２２の外壁にはブラケット２９が固定されている。アクチュエータ１０は、ブラケット２９を用いて変速機１１のケース１２（図１参照）に固定される。 The housing 20 has a cup-shaped front housing 21 and a rear housing 22 . The front housing 21 and the rear housing 22 are fastened together by bolts 23 with their openings combined. A bottomed cylindrical metal plate 24 is embedded in the front housing 21 . The rear housing 22 has a tubular projecting portion 28 projecting to the side opposite to the front housing 21 . A bracket 29 is fixed to the outer wall of the rear housing 22 . Actuator 10 is fixed to case 12 (see FIG. 1) of transmission 11 using bracket 29 .

モータ３０は、ステータ３１およびロータ３４を有する。ステータ３１は、金属プレート２４に例えば圧入等により固定されたステータコア３２と、ステータコア３２に設けられたコイル３３とを有する。ロータ３４は、モータ側軸受３５および減速機側軸受３６により回転軸心ＡＸ１まわりに回転可能に支持された回転軸３７と、回転軸３７の外側に嵌合して固定されたロータコア３８とを有する。モータ側軸受３５は、金属プレート２４に設けられている。減速機側軸受３６は、後述の出力部材４４に設けられている。 Motor 30 has a stator 31 and a rotor 34 . The stator 31 has a stator core 32 fixed to the metal plate 24 by, for example, press fitting, and coils 33 provided on the stator core 32 . The rotor 34 has a rotating shaft 37 rotatably supported around a rotation axis AX1 by a motor-side bearing 35 and a reducer-side bearing 36, and a rotor core 38 fitted and fixed to the outside of the rotating shaft 37. . The motor-side bearing 35 is provided on the metal plate 24 . The speed reducer side bearing 36 is provided in an output member 44 which will be described later.

減速機４０は、偏心軸４１、リングギア４２、偏心ギア４３、出力部材４４および伝達機構４５を備える。偏心軸４１は、回転軸心ＡＸ１に対して偏心する偏心軸心ＡＸ２上に設けられ、回転軸３７と一体に形成されている。リングギア４２は、回転軸心ＡＸ１と同軸上に設けられ、リアハウジング２２に固定されている。偏心ギア４３は、リングギア４２の内歯部４６と噛み合う外歯部４７を有し、偏心軸４１に設けられた軸受４８により遊星運動可能に支持されている。遊星運動とは、偏心軸心ＡＸ２まわりに自転しつつ回転軸心ＡＸ１まわりに公転する運動のことである。遊星運動時の偏心ギア４３の自転速度は、回転軸３７の回転速度に対して変速させられる。 The speed reducer 40 includes an eccentric shaft 41 , a ring gear 42 , an eccentric gear 43 , an output member 44 and a transmission mechanism 45 . The eccentric shaft 41 is provided on an eccentric axis AX2 that is eccentric with respect to the rotation axis AX1, and is formed integrally with the rotation shaft 37. As shown in FIG. The ring gear 42 is provided coaxially with the rotation axis AX1 and fixed to the rear housing 22 . The eccentric gear 43 has an external toothed portion 47 that meshes with the internal toothed portion 46 of the ring gear 42 and is supported by a bearing 48 provided on the eccentric shaft 41 so as to allow planetary movement. The planetary motion is a motion that revolves around the rotation axis AX1 while rotating around the eccentric axis AX2. The rotation speed of the eccentric gear 43 during the planetary motion is changed with respect to the rotation speed of the rotating shaft 37 .

出力部材４４は、回転軸心ＡＸ１と同軸上に設けられ、リアハウジング２２に設けられた軸受４９により回転可能に支持されている。伝達機構４５は、偏心ギア４３に形成された係合突起５１と、出力部材４４に形成され、係合突起５１が挿入された係合孔５２とから構成され、偏心ギア４３の偏心軸心ＡＸ２まわりの回転を出力部材４４に伝達する。 The output member 44 is provided coaxially with the rotation axis AX<b>1 and is rotatably supported by a bearing 49 provided in the rear housing 22 . The transmission mechanism 45 includes an engaging projection 51 formed on the eccentric gear 43 and an engaging hole 52 formed on the output member 44 and into which the engaging projection 51 is inserted. Circumferential rotation is transmitted to the output member 44 .

アクチュエータ１０では、コイル３３の通電相が切り替えられることにより回転磁界が発生し、この回転磁界により生じる磁気的吸引力または反発力を受けてロータ３４が回転する。ロータ３４と共に偏心軸４１が回転軸心ＡＸ１まわりに回転すると偏心ギア４３が遊星運動し、ロータ３４の回転に対して減速させられた偏心ギア４３の回転が出力部材４４から外部に出力される。 In the actuator 10, a rotating magnetic field is generated by switching the energization phase of the coil 33, and the rotor 34 rotates by receiving magnetic attraction or repulsion generated by this rotating magnetic field. When the eccentric shaft 41 rotates around the rotation axis AX1 together with the rotor 34, the eccentric gear 43 performs planetary motion, and the rotation of the eccentric gear 43, which is decelerated relative to the rotation of the rotor 34, is output from the output member 44 to the outside.

（モータ側軸受）
次に、モータ側軸受３５の周辺の構成について説明する。以下の説明において、回転軸心ＡＸ１に平行な方向のことを単に「軸方向」と記載し、回転軸心ＡＸ１まわりの方向のことを単に「周方向」と記載する。 (motor side bearing)
Next, the configuration around the motor-side bearing 35 will be described. In the following description, the direction parallel to the rotation axis AX1 is simply referred to as the "axial direction", and the direction around the rotation axis AX1 is simply referred to as the "circumferential direction".

図２に示すように、アクチュエータ１０は、ロータ３４の回転位置を検出する位置検出部５５を備える。位置検出部５５は、フロントハウジング２１に設けられた磁気センサ５６と、ロータコア３８に設けられた磁石５７とを有する。磁石５７は、周方向に着磁された環状の多極磁石である。磁気センサ５６は、軸方向で磁石５７との間に隙間を空けて配置されている。 As shown in FIG. 2, the actuator 10 includes a position detector 55 that detects the rotational position of the rotor 34. As shown in FIG. The position detector 55 has a magnetic sensor 56 provided on the front housing 21 and a magnet 57 provided on the rotor core 38 . The magnet 57 is an annular multipolar magnet magnetized in the circumferential direction. The magnetic sensor 56 is arranged with a gap from the magnet 57 in the axial direction.

金属プレート２４は、ステータコア３２が圧入された筒部６１と、筒部６１の一端に設けられた底部６２と、底部６２の中央において軸方向に突出するように形成された筒状の外輪固定部６３とを有する。金属プレート２４は樹脂製のフロントハウジング２１にインサート成形されている。外輪固定部６３はフロントハウジング２１と一体的に形成されている。 The metal plate 24 includes a cylindrical portion 61 into which the stator core 32 is press-fitted, a bottom portion 62 provided at one end of the cylindrical portion 61, and a cylindrical outer ring fixing portion formed in the center of the bottom portion 62 so as to protrude in the axial direction. 63. The metal plate 24 is insert-molded in the front housing 21 made of resin. The outer ring fixing portion 63 is formed integrally with the front housing 21 .

図３に示すように、モータ側軸受３５の外輪７１は、外輪固定部６３の内側に圧入固定されている。モータ側軸受３５の内輪７２は、回転軸３７の一端部３９の外側に圧入固定されている。このようにモータ側軸受３５の外輪７１および内輪７２の両方とも固定することで、フロントハウジング２１に対するロータ３４の軸方向移動を抑制し、磁気センサ５６と磁石５７との隙間のばらつき量を小さくしている。そのため、上記隙間をできるだけ小さく設定して磁気センサ５６に作用する磁力を大きくすることができ、またその磁力を安定させることができる。 As shown in FIG. 3 , the outer ring 71 of the motor-side bearing 35 is press-fitted and fixed inside the outer ring fixing portion 63 . The inner ring 72 of the motor-side bearing 35 is press-fitted and fixed to the outside of the one end portion 39 of the rotary shaft 37 . By fixing both the outer ring 71 and the inner ring 72 of the motor-side bearing 35 in this way, the axial movement of the rotor 34 with respect to the front housing 21 is suppressed, and the variation in the gap between the magnetic sensor 56 and the magnet 57 is reduced. ing. Therefore, by setting the gap as small as possible, the magnetic force acting on the magnetic sensor 56 can be increased, and the magnetic force can be stabilized.

上記のようにモータ側軸受３５の外輪７１および内輪７２を両方とも固定する形態においては、外輪７１を圧入固定した後、内輪７２に回転軸３７を圧入するときに内輪７２を受ける必要がある。特許第５４８３２１７号公報に開示されたアクチュエータでは金属プレートに外輪固定部と内輪受け部を一体に設けているが、金属プレートを製造し難いという問題があった。この問題に対して、第１実施形態では、内輪受け部をアクチュエータ１０から取り除き、組付け時に治具で内輪７２を受けるように構成している。以下、詳しく説明する。 In the configuration in which both the outer ring 71 and the inner ring 72 of the motor-side bearing 35 are fixed as described above, it is necessary to receive the inner ring 72 when the rotating shaft 37 is press-fitted into the inner ring 72 after the outer ring 71 is press-fitted and fixed. In the actuator disclosed in Japanese Patent No. 5483217, the outer ring fixing portion and the inner ring receiving portion are integrally formed on the metal plate, but there is a problem that the metal plate is difficult to manufacture. To address this problem, in the first embodiment, the inner ring receiving portion is removed from the actuator 10, and the inner ring 72 is received by a jig during assembly. A detailed description will be given below.

外輪固定部６３は、単純な筒状に形成されており、外輪７１の全周を保持するようになっている。外輪固定部６３に対して内側は開放されており、金属プレート２４には内輪７２を受ける部分が設けられていない。 The outer ring fixing portion 63 is formed in a simple cylindrical shape, and holds the entire circumference of the outer ring 71 . The inner side of the outer ring fixing portion 63 is open, and the metal plate 24 is not provided with a portion for receiving the inner ring 72 .

図３および図４に示すように、フロントハウジング２１は、軸方向視において内輪７２の一端面７３の少なくとも一部と重なる開口をもつ治具挿入孔７４を有する。治具挿入孔７４は、回転軸３７と同軸上に設けられた貫通孔である。治具挿入孔７４の内径Ｄ１は、内輪７２の内径Ｄ２よりも大きい。本実施形態では、治具挿入孔７４は、一端面７３よりも大きく形成されており、軸方向視で一端面７３の全部と重なる開口をもつ。 As shown in FIGS. 3 and 4, the front housing 21 has a jig insertion hole 74 having an opening that overlaps at least a portion of the one end surface 73 of the inner ring 72 when viewed in the axial direction. The jig insertion hole 74 is a through hole provided coaxially with the rotating shaft 37 . The inner diameter D1 of the jig insertion hole 74 is larger than the inner diameter D2 of the inner ring 72 . In this embodiment, the jig insertion hole 74 is formed larger than the one end surface 73 and has an opening that overlaps the entire one end surface 73 when viewed in the axial direction.

アクチュエータ１０の組付け工程では、（１）図５に示すように外輪７１を外輪固定部６３に圧入したあと、（２）図６に示すように治具挿入孔７４に挿入した内輪受け治具９１により内輪７２を受けながら回転軸３７の一端部３９を内輪７２に圧入する。内輪受け治具９１は、内輪受け治具９１を挿入可能な孔である。 In the assembly process of the actuator 10, (1) the outer ring 71 is press-fitted into the outer ring fixing portion 63 as shown in FIG. 5, and (2) the inner ring receiving jig is inserted into the jig insertion hole 74 as shown in FIG. One end portion 39 of the rotating shaft 37 is press-fitted into the inner ring 72 while receiving the inner ring 72 by 91 . The inner ring receiving jig 91 is a hole into which the inner ring receiving jig 91 can be inserted.

図５では圧入パンチ９３で外輪７１を押しながら、一定ストロークまたは外輪７１が所定の深さに到達するまで外輪７１を圧入する。これに対して、図７に示すように圧入パンチ９５で外輪７１および内輪７２を押しながら、内輪７２が内輪受け治具９１に当接するまで外輪７１を圧入してもよい。 In FIG. 5, while pressing the outer ring 71 with a press-fitting punch 93, the outer ring 71 is press-fitted by a constant stroke or until the outer ring 71 reaches a predetermined depth. On the other hand, as shown in FIG. 7, the outer ring 71 may be press-fitted until the inner ring 72 contacts the inner ring receiving jig 91 while pushing the outer ring 71 and the inner ring 72 with a press-fitting punch 95 .

図５および図７では、例えばフロントハウジング２１の底側等を受けつつ外輪７１を圧入する。これに対して、他の実施形態では、治具挿入孔７４に挿入した治具により外輪固定部６３を受けつつ外輪７１を圧入してもよい。図３に示すように、外輪固定部６３は底部６２からモータ３０側に突き出すように形成されており、外輪固定部６３の基端部７５が被受け部として好適である。治具挿入孔７４は、内径Ｄ１が外輪固定部６３の内径Ｄ３よりも大きくなっており、軸方向視において基端部７５と重なる開口をもつ。 5 and 7, the outer ring 71 is press-fitted while receiving the bottom side of the front housing 21, for example. In contrast, in another embodiment, the outer ring 71 may be press-fit while receiving the outer ring fixing portion 63 with a jig inserted into the jig insertion hole 74 . As shown in FIG. 3, the outer ring fixing portion 63 is formed to protrude from the bottom portion 62 toward the motor 30, and the base end portion 75 of the outer ring fixing portion 63 is suitable as the receiving portion. The jig insertion hole 74 has an inner diameter D1 larger than an inner diameter D3 of the outer ring fixing portion 63, and has an opening overlapping the base end portion 75 when viewed in the axial direction.

図５および図７では、内輪受け治具９１は、治具挿入孔７４および外輪固定部６３よりも小さい。これに対して、他の実施形態では、内輪受け治具９１のうち内輪７２を受ける先端の内輪受け部９２から一段下がった箇所に、治具挿入孔７４または外輪固定部６３と嵌合可能な嵌合部を設け、この嵌合部を用いて内輪受け治具９１と内輪７２との位置決めを行ってもよい。この形態において治具挿入孔７４または外輪固定部６３は位置決め部としても機能する。 5 and 7, the inner ring receiving jig 91 is smaller than the jig insertion hole 74 and the outer ring fixing portion 63. In FIGS. On the other hand, in another embodiment, the jig insertion hole 74 or the outer ring fixing portion 63 can be fitted to a portion of the inner ring receiving jig 91 that is one step lower than the inner ring receiving portion 92 at the tip of the inner ring receiving jig 91 that receives the inner ring 72 . A fitting portion may be provided and the inner ring receiving jig 91 and the inner ring 72 may be positioned using this fitting portion. In this form, the jig insertion hole 74 or the outer ring fixing portion 63 also functions as a positioning portion.

図３に戻って、フロントハウジング２１には治具挿入孔７４を塞ぐようにシール部材８１が貼り付けられている。シール部材８１は、防水透湿機能をもつ。すなわち、シール部材８１は、固定および液体が治具挿入孔７４を通じてハウジング２０に出入りするのを抑制しつつ、気体および蒸気が治具挿入孔７４を通じてハウジング２０を出入りするのを許容する。 Returning to FIG. 3 , a sealing member 81 is attached to the front housing 21 so as to block the jig insertion hole 74 . The sealing member 81 has a waterproof and moisture permeable function. That is, the seal member 81 allows gas and vapor to enter and exit the housing 20 through the jig insertion hole 74 while restricting static and liquid from entering and exiting the housing 20 through the jig insertion hole 74 .

外輪固定部６３およびフロントハウジング２１は、モータ側軸受３５に対して治具挿入孔７４側の空間Ａ１と反対側の空間Ａ２とを連通させる通気孔７６を有する。 The outer ring fixing portion 63 and the front housing 21 have a vent hole 76 that communicates a space A1 on the side of the jig insertion hole 74 with respect to the motor side bearing 35 and a space A2 on the opposite side.

回転軸３７のうち治具挿入孔７４側の一端部３９には回転伝達係合部７７が形成されている。回転伝達係合部７７は例えば六角穴等から構成される。治具挿入孔７４の開口は、軸方向視で回転伝達係合部７７の全部と重なっている。 A rotation transmission engaging portion 77 is formed at one end portion 39 of the rotary shaft 37 on the jig insertion hole 74 side. The rotation transmission engaging portion 77 is composed of, for example, a hexagonal hole. The opening of the jig insertion hole 74 overlaps the entire rotation transmission engaging portion 77 when viewed in the axial direction.

（効果）
以上説明したように第１実施形態では、フロントハウジング２１は、軸方向視において内輪７２の一端面７３の少なくとも一部と重なる開口をもち、内輪受け治具９１を挿入可能な治具挿入孔７４を有する。このような治具挿入孔７４を設けることで、組付け時に治具挿入孔７４に挿入した内輪受け治具９１で内輪７２を受けることが可能となり、外輪固定部６３と一体に内輪受け部を設ける必要がなくなる。そのため、モータ側軸受３５の外輪７１および内輪７２を両方とも固定することで位置検出部５５の磁力を増大および安定化させつつ、外輪固定部６３を単純な筒状にすることで製造し易くなっている。 (effect)
As described above, in the first embodiment, the front housing 21 has an opening that overlaps at least a portion of the one end surface 73 of the inner ring 72 when viewed in the axial direction. have By providing such a jig insertion hole 74, the inner ring 72 can be received by the inner ring receiving jig 91 inserted into the jig insertion hole 74 during assembly, and the inner ring receiving portion can be integrated with the outer ring fixing portion 63. no longer need to be set. Therefore, by fixing both the outer ring 71 and the inner ring 72 of the motor-side bearing 35, the magnetic force of the position detecting portion 55 is increased and stabilized. ing.

また、第１実施形態では、治具挿入孔７４は、一端面７３よりも大きく形成されており、軸方向視で一端面７３の全部と重なる開口をもつ。そのため、一端面７３の全面を内輪受け治具９１で受けることができる。 Further, in the first embodiment, the jig insertion hole 74 is formed larger than the one end surface 73 and has an opening that overlaps the entire one end surface 73 when viewed in the axial direction. Therefore, the entire surface of the one end surface 73 can be received by the inner ring receiving jig 91 .

また、第１実施形態では、固定および液体が治具挿入孔７４を通じてハウジング２０に出入りするのを抑制するシール部材８１が設けられている。これにより治具挿入孔７４を設けつつも、ハウジング２０の異物混入および内圧上昇を防止できる。また、従来はハウジング２０のうち変速機１１側（リアハウジング２２の外壁）に設けられていた呼吸孔およびフィルタに代えて、治具挿入孔７４およびシール部材８１を設けることにより、変速機１１とハウジング２０とのクリアランスが拡大するので、アクチュエータ１０の変速機１１への搭載性を向上できる。 In addition, in the first embodiment, a seal member 81 is provided for fixing and for suppressing entry and exit of liquid into and out of the housing 20 through the jig insertion hole 74 . As a result, even though the jig insertion hole 74 is provided, it is possible to prevent foreign matter from entering the housing 20 and an increase in internal pressure. Further, instead of the breathing hole and the filter conventionally provided in the housing 20 on the side of the transmission 11 (the outer wall of the rear housing 22), the jig insertion hole 74 and the seal member 81 are provided, whereby the transmission 11 and the Since the clearance with the housing 20 is increased, the mountability of the actuator 10 to the transmission 11 can be improved.

また、第１実施形態では、外輪固定部６３およびフロントハウジング２１は、モータ側軸受３５に対して治具挿入孔７４側の空間Ａ１と反対側の空間Ａ２とを連通させる通気孔７６を有する。これにより、ハウジング２０の内圧変動時に通気孔７６で呼吸する（空間Ａ１と空間Ａ２との間で空気が流れる）ことができる。そのため、モータ側軸受３５内部を通って呼吸することに起因してモータ側軸受３５のグリスが漏れることを防ぎ、モータ側軸受３５の寿命を改善できる。 Further, in the first embodiment, the outer ring fixing portion 63 and the front housing 21 have the vent holes 76 that allow the space A1 on the jig insertion hole 74 side and the space A2 on the opposite side to communicate with each other with respect to the motor side bearing 35 . Thereby, it is possible to breathe through the ventilation hole 76 (air flows between the space A1 and the space A2) when the internal pressure of the housing 20 fluctuates. Therefore, it is possible to prevent the grease from leaking from the motor side bearing 35 due to breathing through the inside of the motor side bearing 35, thereby improving the life of the motor side bearing 35.

また、第１実施形態では、回転軸３７のうち治具挿入孔７４側の一端部３９には回転伝達係合部７７が形成されている。治具挿入孔７４の開口は、軸方向視で回転伝達係合部７７と重なっている。これにより、治具挿入孔７４に挿入して回転伝達係合部７７に係合させた回転治具を用いてモータ３０を外部から機械的に回転させる可能である。例えばモータ３０が故障したときに強制的にパーキングロックを解除することができる。 Further, in the first embodiment, a rotation transmission engaging portion 77 is formed at one end portion 39 of the rotating shaft 37 on the jig insertion hole 74 side. The opening of the jig insertion hole 74 overlaps the rotation transmission engaging portion 77 when viewed in the axial direction. As a result, the motor 30 can be mechanically rotated from the outside using a rotary jig inserted into the jig insertion hole 74 and engaged with the rotation transmission engaging portion 77 . For example, the parking lock can be forcibly released when the motor 30 fails.

［第２実施形態］
以下の説明において、回転軸３７の径方向のことを単に「径方向」と記載する。第２実施形態では、図８および図９に示すように、治具挿入孔７４２は、周方向に並ぶように複数設けられている。治具挿入孔７４２の径方向の幅Ｗ１は、一端面７３の径方向の幅Ｗ２よりも大きい。治具挿入孔７４２の径方向位置は一端面７３の径方向位置とほぼ同じである。治具挿入孔７４２の開口の一部は、軸方向視で一端面７３の一部と重なっている。 [Second embodiment]
In the following description, the radial direction of the rotating shaft 37 is simply referred to as "radial direction". In the second embodiment, as shown in FIGS. 8 and 9, a plurality of jig insertion holes 742 are provided so as to line up in the circumferential direction. A radial width W1 of the jig insertion hole 742 is larger than a radial width W2 of the one end surface 73 . The radial position of the jig insertion hole 742 is substantially the same as the radial position of the one end surface 73 . A portion of the opening of the jig insertion hole 742 overlaps a portion of the one end surface 73 when viewed in the axial direction.

図１０に示すように内輪受け治具９１２は、治具挿入孔７４２に挿入される２つの突起状の内輪受け部９２２を有する。内輪受け部９２２の外径は治具挿入孔７４２の内径とほぼ同じである。内輪受け部９２２が治具挿入孔７４２に嵌合することで、内輪受け治具９１２と内輪７２との位置決めが行われる。この形態において治具挿入孔７４２は位置決め部としても機能する。 As shown in FIG. 10 , the inner ring receiving jig 912 has two projecting inner ring receiving portions 922 that are inserted into the jig insertion holes 742 . The outer diameter of the inner ring receiving portion 922 is substantially the same as the inner diameter of the jig insertion hole 742 . The inner ring receiving jig 912 and the inner ring 72 are positioned by fitting the inner ring receiving portion 922 into the jig insertion hole 742 . In this form, the jig insertion hole 742 also functions as a positioning portion.

第２実施形態のアクチュエータ１０によれば、第１実施形態と同様に位置検出部５５の磁力を増大および安定化させつつ製造し易い。 According to the actuator 10 of the second embodiment, it is easy to manufacture while increasing and stabilizing the magnetic force of the position detection section 55 as in the first embodiment.

［第３実施形態］
第３実施形態では、図１１および図１２に示すように、治具挿入孔７４３は、周方向に並ぶように複数設けられている。本実施形態では、３つの治具挿入孔７４３が周方向において等間隔に設けられている。治具挿入孔７４３の径方向の幅Ｗ３は、一端面７３の径方向の幅Ｗ２と同じである。治具挿入孔７４３の径方向位置は一端面７３の径方向位置とほぼ同じである。治具挿入孔７４３の開口の全体は、軸方向視で一端面７３の一部と重なっている。 [Third Embodiment]
In the third embodiment, as shown in FIGS. 11 and 12, a plurality of jig insertion holes 743 are provided so as to line up in the circumferential direction. In this embodiment, three jig insertion holes 743 are provided at regular intervals in the circumferential direction. A radial width W3 of the jig insertion hole 743 is the same as a radial width W2 of the one end surface 73 . The radial position of the jig insertion hole 743 is substantially the same as the radial position of the one end surface 73 . The entire opening of the jig insertion hole 743 overlaps with a portion of the one end surface 73 when viewed in the axial direction.

図１３に示すように内輪受け治具９１３は、治具挿入孔７４３に挿入される２つの突起状の内輪受け部９２３を有する。内輪受け部９２３の外径は治具挿入孔７４３の内径とほぼ同じである。内輪受け部９２３が治具挿入孔７４３に嵌合することで、内輪受け治具９１３と内輪７２との位置決めが行われる。この形態において治具挿入孔７４３は位置決め部としても機能する。 As shown in FIG. 13 , the inner ring receiving jig 913 has two projecting inner ring receiving portions 923 that are inserted into the jig insertion holes 743 . The outer diameter of the inner ring receiving portion 923 is approximately the same as the inner diameter of the jig insertion hole 743 . The inner ring receiving jig 913 and the inner ring 72 are positioned by fitting the inner ring receiving portion 923 into the jig insertion hole 743 . In this form, the jig insertion hole 743 also functions as a positioning portion.

第３実施形態のアクチュエータ１０によれば、第１実施形態と同様に位置検出部５５の磁力を増大および安定化させつつ製造し易い。 According to the actuator 10 of the third embodiment, it is easy to manufacture while increasing and stabilizing the magnetic force of the position detecting portion 55 as in the first embodiment.

［第４実施形態］
第４実施形態では、図１４に示すように治具挿入孔７４４の内壁のうちモータ側軸受３５とは反対側には、径方向内側に突き出す環状の係止部７８が設けられている。シール部材８１４は、防水透湿機能をもつフィルム８２と、フィルム８２を保持する保持部８３と、保持部８３から治具挿入孔７４４内に突き出して係止部７８に係止する爪部８４と、保持部８３とフロントハウジング２１との間に配置されるＯリング８５とを有する。このようにシール部材８１４がスナップフィットタイプであってもよい。 [Fourth embodiment]
In the fourth embodiment, as shown in FIG. 14, an annular locking portion 78 projecting radially inward is provided on the inner wall of the jig insertion hole 744 on the side opposite to the motor side bearing 35 . The sealing member 814 includes a film 82 having a waterproof and moisture permeable function, a holding portion 83 that holds the film 82, and a claw portion 84 that protrudes from the holding portion 83 into the jig insertion hole 744 and is locked to the locking portion 78. , and an O-ring 85 arranged between the holding portion 83 and the front housing 21 . Thus, the sealing member 814 may be of the snap-fit type.

また、第４実施形態では、回転軸３７は、空間Ａ１と空間Ａ２とを連通させる通気孔７６４を有する。通気孔７６４は、回転軸３７の一端部３９等に形成された溝からなる。これにより、ハウジング２０の内圧変動時に通気孔７６４で呼吸することができる。 Further, in the fourth embodiment, the rotary shaft 37 has a vent hole 764 that communicates the space A1 and the space A2. The vent hole 764 is a groove formed in the one end portion 39 of the rotating shaft 37 or the like. Thereby, it is possible to breathe through the ventilation hole 764 when the internal pressure of the housing 20 fluctuates.

［第５実施形態］
第５実施形態では、図１５に示すようにフロントハウジング２１の外壁には、治具挿入孔７４５の外側で軸方向へ突き出す筒状突起６５が設けられている。シール部材８１５は、防水透湿機能をもつフィルム８２５と、フィルム８２５を保持し、筒状突起６５に圧入された保持部８３５と、保持部８３５の外側でフィルム８２５を覆うように設けられたカバー部８６とを有する。このようにシール部材８１５が外壁固定タイプであってもよい。 [Fifth embodiment]
In the fifth embodiment, as shown in FIG. 15, the outer wall of the front housing 21 is provided with a cylindrical projection 65 projecting axially outside the jig insertion hole 745 . The sealing member 815 includes a film 825 having a waterproof and moisture-permeable function, a holding portion 835 that holds the film 825 and is press-fitted into the cylindrical projection 65, and a cover that covers the film 825 outside the holding portion 835. 86. In this way, the sealing member 815 may be of the exterior wall fixing type.

［第６実施形態］
第６実施形態では、図１６に示すようにシール部材８１６は、防水透湿機能をもつフィルム８２６と、フィルム８２６を保持し、治具挿入孔７４６の内壁に圧入された保持部８３６とを有する。このようにシール部材８１６が内壁固定タイプであってもよい。 [Sixth embodiment]
In the sixth embodiment, as shown in FIG. 16, the sealing member 816 has a film 826 having a waterproof and moisture permeable function, and a holding portion 836 that holds the film 826 and is press-fitted into the inner wall of the jig insertion hole 746. . In this way, the sealing member 816 may be of the inner wall fixing type.

本発明は、上述した実施形態に限定されるものではなく、発明の趣旨を逸脱しない範囲で種々の形態で実施可能である。 The present invention is not limited to the above-described embodiments, and can be embodied in various forms without departing from the scope of the invention.

２０ ハウジング、３０ モータ、３５ 軸受、３７ 回転軸、４０ 減速機、
６３ 外輪固定部、７１ 外輪、７２ 内輪、７３ 一端面、
７４，７４２，７４３，７４４，７４５，７４６ 治具挿入孔、
９１，９１２，９１３ 内輪受け治具、ＡＸ１ 回転軸心。 20 housing, 30 motor, 35 bearing, 37 rotating shaft, 40 reduction gear,
63 outer ring fixing portion, 71 outer ring, 72 inner ring, 73 one end face,
74, 742, 743, 744, 745, 746 jig insertion hole,
91, 912, 913 inner ring receiving jig, AX1 rotation axis.

Claims (4)

ステータコア（３２）、前記ステータコアに設けられたコイル（３３）、回転軸（３７）、および、前記回転軸と一体のロータコア（３８）を有するモータ（３０）と、
前記回転軸（３７）の回転を減速して出力する減速機（４０）と、
前記モータおよび前記減速機を収容している樹脂製のハウジング（２０）と、
外輪（７１）および前記回転軸に圧入固定された内輪（７２）を有し、前記回転軸を回転可能に支持している軸受（３５）と、
前記ステータコアが圧入された筒部（６１）、前記筒部の一端に設けられた底部（６２）、前記筒部の中央において軸方向に突出するように形成され前記外輪を圧入固定している軸方向の両端が開放された筒状の外輪固定部（６３）を有し、前記筒部および前記底部が前記ハウジングにインサート成形により一体的に設けられている金属製の金属プレート（２４）と、
前記ロータコアに設けられた磁石（５７）と、
前記回転軸の回転軸心（ＡＸ１）に平行な軸方向において前記磁石との間に隙間を空けて配置されるように前記ハウジングに設けられ、前記磁石の磁気により前記回転軸の回転位置を検出する磁気センサ（５６）と、
を備え、
前記ハウジングは、前記回転軸の回転軸心（ＡＸ１）に平行な軸方向視において前記内輪の一端面（７３）の少なくとも一部と重なる開口をもち、内輪受け治具（９１，９１２，９１３）を挿入可能な治具挿入孔（７４，７４２，７４３，７４４，７４５，７４６）を有し、
前記治具挿入孔は、前記金属プレートの前記底部を保持している前記ハウジングの底部保持部の径方向内側に形成されている回転式アクチュエータ。 a motor (30) having a stator core (32), a coil (33) provided on the stator core, a rotating shaft (37), and a rotor core (38) integrated with the rotating shaft;
a speed reducer (40) that reduces the speed of rotation of the rotary shaft (37) and outputs the speed;
a resin housing (20) housing the motor and the speed reducer;
a bearing (35) having an outer ring (71) and an inner ring (72) press-fitted and fixed to the rotating shaft and rotatably supporting the rotating shaft;
a cylinder portion (61) into which the stator core is press-fitted; a bottom portion (62) provided at one end of the cylinder portion; a metallic metal plate (24) having a cylindrical outer ring fixing portion (63) with both ends open in the direction , and the cylindrical portion and the bottom portion being integrally provided in the housing by insert molding;
a magnet (57) provided on the rotor core ;
Provided in the housing so as to be arranged with a gap from the magnet in an axial direction parallel to the rotation axis (AX1) of the rotation shaft, and detects the rotational position of the rotation shaft by the magnetism of the magnet. a magnetic sensor (56) for
with
The housing has an opening that overlaps at least a part of one end surface (73) of the inner ring when viewed in an axial direction parallel to the rotation axis (AX1) of the rotation shaft, and has an inner ring receiving jig (91, 912, 913). has a jig insertion hole (74, 742, 743, 744, 745, 746 ) into which the
In the rotary actuator, the jig insertion hole is formed radially inside a bottom holding portion of the housing that holds the bottom of the metal plate. 固体および液体が前記治具挿入孔を通じて前記ハウジングに出入りするのを抑制するシール部材（８１，８１４，８１５，８１６）をさらに備える請求項１に記載の回転式アクチュエータ。 2. The rotary actuator according to claim 1, further comprising a sealing member (81, 814, 815, 816) that prevents solids and liquids from entering and exiting said housing through said jig insertion hole. 前記外輪固定部または前記回転軸は、前記軸受に対して前記治具挿入孔側の空間（Ａ１）と、前記軸受に対して前記治具挿入孔とは反対側の空間（Ａ２）とを連通させる通気孔（７６，７６４）を有する請求項１または２に記載の回転式アクチュエータ。 The outer ring fixing portion or the rotating shaft communicates a space (A1) on the side of the jig insertion hole with respect to the bearing and a space (A2) on the side opposite to the jig insertion hole with respect to the bearing. 3. A rotary actuator according to claim 1 or 2, having a vent (76, 764) for allowing air flow. 前記回転軸のうち前記治具挿入孔側の一端部（３９）には回転伝達係合部（７７）が形成され、
前記治具挿入孔は、軸方向視で前記回転伝達係合部と重なる開口をもっている請求項１～３のいずれか一項に記載の回転式アクチュエータ。 A rotation transmission engaging portion (77) is formed at one end (39) of the rotating shaft on the jig insertion hole side,
The rotary actuator according to any one of claims 1 to 3, wherein the jig insertion hole has an opening that overlaps with the rotation transmission engaging portion when viewed in the axial direction.
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